节点文献
二茂铁亚胺环钯化合物——一种新型芳基氯化汞偶联催化剂
Cyclopalladated Ferrocenylimines——A Novel Type of Catalyst for Dimerization of Arylmercuric Chlorides
【摘要】 发现在催化量二茂铁亚胺环钯化合物催化下,芳基氯化汞可在温和条件下偶联,以中等或高的收率生成联芳烃.对于铑盐不能催化偶联的邻位取代苯基氯化汞和α-萘基氯化汞,在此体系中亦可发生偶联.以HMPA为溶剂,在x=0.025(摩尔分数)化合物1或2催化下与2.0当量氯化锂存在时,得到最好的催化效果.
【Abstract】 Dimerization of arylmercuric chlorides has been found to proceed using a catalytic amount of cyclopalladat-ed ferrocenylimines under mild conditions, affording a variety of biaryls in moderate to excellent yields. Even ortho-substituted phenylmercuric chlorides and α-naphthylmercuric chloride, which can not be catalytically dimerized by rhodium salt are applicable to this reaction. The best results were obtained with 0.025 (molar fraction) 1 in the presence of 2.0 equiv. of LiCl in HMPA at 80℃.
【关键词】 二茂铁亚胺环钯化合物；
芳基氯化汞；
催化偶联；
【Key words】 cyclopalladated ferrocenylimines； arylmercuric chlorides； catalyzed dimerization；
【Key words】 cyclopalladated ferrocenylimines； arylmercuric chlorides； catalyzed dimerization；
【基金】 国家自然科学基金(No.20072034);河南省自然科学基金
- 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,2003年07期
- 【分类号】O643.3
- 【被引频次】13
- 【下载频次】136